英语的"形合"与汉语的"意合"之比较

英语的"形合"与汉语的"意合"是英汉对比中一个重要的方面。文章从关系词的重要性, 语序的作用,主语的省略与否,以及古诗词的英汉对比几个方面来说明这一点,这种比较对 于英汉互译以及英文写作时的遣词造句和布局谋篇有着重要的意义。     

An Algorithm for the Maximum Likelihood Problem on Evolutionary Trees

We investigate the problem of reconstructing evolutionary trees with maximum likelihood (MLET). In the MLET problem, a set of genetic sequences is given and a feasible solution is sought, consisting of an evolutionary tree (where general nodes correspond to sequences and input sequences occur as leaves) along with assignments for the interior nodes. Due to the difficulty of solving the MLET directly, we consider two restricted versions of the problem: the ancestral maximum likelihood (AML) and the maximum parsimony (MP) problems. If we let d_e denote the number of different characters occurring in two nodes linked by edge e, then the objective function of the AML problem is min ∑_{eσ E(T)} H(d_e/k), where H is the entropy function and k is the length of each sequence. In the MP we consider the objective function min σ_{e∊ E(T)} d_e/k. Both the AML and the MP are NP-hard. We propose a new approach for computing solutions for these problems, based on genetic algorithms.     

Galois域上m序列的游程、分量序列和向量序列

本文讨论了Galois域上m序列的游程、分量序列和向量序列.得到了游程的重要特性:n-1长的零游程是等间隙的,证明了分量序列是素域上的 m 序列;求出了向量序列的线性复杂度、极小多项式、周期和自相关函数.     

Making sense of the parenting ‘soft/hard split’

This paper explores the common parenting style tension around nurture versus limit-setting often evident when working with families with a symptomatic child. Firstly it will delve into the parenting ‘soft/hard split’ with an overview of the literature on parenting styles. Next, it summarises the appearance of this phenomenon in the family therapy literature during its formative days, noting how Bowen, Minuchin, Haley, MRI (Bateson), and the Milan associates respond to this parent presentation in their approaches. Next, the paper outlines recent iterations of these family therapy interventions. An expanded discussion follows on Bowen theory's understanding of the parenting tension triangle. The article then outlines elements of the author's qualitative research study of parents' experience of adolescents' mental health treatment where the ‘soft/hard split’ emerged as a repeating theme. Finally, a clinical intervention based on Bowen theory, the Parent Hope Project, is outlined for how it addresses the parenting ‘soft/hard split.’ The goal is to contribute to understanding this phenomenon and its implications for clinical practice.